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- Centre de Recherche Astrophysique de LyonFR515 papers
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9 papers · 2 filters
Probing a regular orbit with spectral dynamics
Y. Copin, H. S. Zhao, P. T. de Zeeuw
We have extended the spectral dynamics formalism introduced by Binney & Spergel, and have implemented a semi-analytic method to represent regular orbits in any potential, making fu…
The central black hole masses and Doppler factors of the -ray loud blazars
J. H. Fan, G. Z. Xie, R. Bacon
In this paper, The central black hole masses and the Doppler factors are derived for PKS 0528+134, PKS 0537-441, 3C279, PKS 1406-074, PKS 1622-297, Q1633+382, Mkn 501, and BL Lacer…
Structure and stellar content of dwarf galaxies IV. B and R photometry of dwarf galaxies in the CVnI cloud
T. Bremnes, B. Binggeli, P. Prugniel
We have carried out CCD photometry in the Cousins B and R bands of 15 galaxies in the Canes Venatici I cloud. Total magnitudes, effective radii, effective surface brightnesses, as…
Effect of the large scale environment on the internal dynamics of early-type galaxies
G. Maubon, Ph. Prugniel
We have studied the population-density relation in very sparse environments, from poor clusters to isolated galaxies, and we find that early-type galaxies with a young stellar popu…
Evidence for dark matter in different scales from the KLUN galaxy sample
M. O. Hanski, P. Teerikorpi, T. Ekholm +4
The KLUN (Kinematics of the Local UNiverse) sample of 6600 spiral galaxies is used in studying dark matter in different scales: Type dependence of the zero-point of Tully-Fisher re…
Effect of the large scale environment on the stellar content of early-type galaxies
Ph. Prugniel, V. Golev, G. Maubon
In order to study the influence of the environment on the stellar population of early-type galaxies we have analyzed the relations between the density of the environment (lrho) and…